Originally Posted by cyclintom
It is pretty difficult to load a bike down with all of your touring gear and not have some wobbles in different speed regimes. Here are some ideas to eliminate or limit them:
Missing from your list:
4) If the wheels are not perfectly in line and centered in the frame, wobbles will occur, and more so with increased loads. Bikes with horizontal dropouts are particularly susceptible to this. It is usually enough to adjust the rear wheel carefully so that it is exactly centered between the chainstays. If the wobbles persist, the frame and/or the fork may be out of alignment.